Factor the polynomial.81x2 - 126xy + 49y2
A. (9x + 7y)2
B. (81x + 1)(x + 49)
C. (9x - 7y)(9x + 7y)
D. (9x - 7y)2
Answer: D
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Solve the inequality, and graph the solution set.3x2 + 8x ? 3
A. [-3, ?)
B. 
C. 
D. (-?, -3] ? 
A ship is anchored off a long straight shoreline that runs north and south. From two observation points 18 miles apart on shore, the bearings of the ship are N 26° E and S 51° E. What is the distance from the ship to each of the observation points? ? Apply the rules regarding the use of significant digits after all computations are complete. ? The distance from the ship to the observation point for which the bearing of the ship is N 26° E is __________ mi ? The distance from the ship to the observation point for which the bearing of the ship is S 51° E is __________ mi
What will be an ideal response?
Use the intercept form to find the equation of the line with the given intercepts. The intercept form of the equation of a line with intercepts (a, 0) and (0, b) is
?
?
?
x-intercept: (-3, 0)
y-intercept: (0, 8)
?
?
A. 
B. 
C. 
D. 
E. 
Use the REGRESSION feature on a graphing calculator.A particular bacterium is found to have a doubling time of 20 minutes. If a laboratory culture begins with a population of 300 of this bacteria and there is no change in the growth rate, how many bacteria will be present in 55 minutes? Use six decimal places in the interim calculation for the growth rate.
Fill in the blank(s) with the appropriate word(s).